Implementation of a semi-automated processing system for DNA profiling of forensic casework samples |
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Authors: | Kai Vollack Barbara Haak Ralph Schwenzer Werner Pflug |
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Affiliation: | Landeskriminalamt Baden-Württemberg (Office of Criminal Investigation), Taubenheimstraße 85, 70372 Stuttgart, Germany |
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Abstract: | The concept for a semi-automated processing system for DNA analysis of crime scene samples was developed at the Landeskriminalamt Baden-Württemberg (LKA BW) and comprises the extraction of genomic DNA from human cells by ChargeSwitch® magnetic bead technology (CST), quantification of purified DNA by real-time PCR, amplification of short tandem repeats (STRs) by PCR and DNA fragment length analysis of STRs by capillary electrophoresis. Three liquid handling workstations from Tecan, a real-time PCR device and a 16-channel capillary electrophoresis (CE) system, both from Applied Biosystems (AB), are linked via laboratory data network. Transmission and management of sample and analysis data is enabled by a Laboratory Information and Management System (LIMS). Suitability for a wide range of stain types, early exclusion of DNA-free samples, barcode sample identification and prevention of cross-contaminations guarantee efficiency and high quality standards. |
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Keywords: | DNA profiling Semi-automated processing Laboratory data network |
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